"use strict";
var packingOptions = {
    PADDING: 10,
    GOLDEN_SECTION: (1 + Math.sqrt(5)) / 2,
    FLOAT_EPSILON: 0.0001,
    MAX_INERATIONS: 100
};
function applyPacking(graphs, w, h, node_size, desired_ratio) {
    if (desired_ratio === void 0) { desired_ratio = 1; }
    var init_x = 0, init_y = 0, svg_width = w, svg_height = h, desired_ratio = typeof desired_ratio !== 'undefined' ? desired_ratio : 1, node_size = typeof node_size !== 'undefined' ? node_size : 0, real_width = 0, real_height = 0, min_width = 0, global_bottom = 0, line = [];
    if (graphs.length == 0)
        return;
    calculate_bb(graphs);
    apply(graphs, desired_ratio);
    put_nodes_to_right_positions(graphs);
    function calculate_bb(graphs) {
        graphs.forEach(function (g) {
            calculate_single_bb(g);
        });
        function calculate_single_bb(graph) {
            var min_x = Number.MAX_VALUE, min_y = Number.MAX_VALUE, max_x = 0, max_y = 0;
            graph.array.forEach(function (v) {
                var w = typeof v.width !== 'undefined' ? v.width : node_size;
                var h = typeof v.height !== 'undefined' ? v.height : node_size;
                w /= 2;
                h /= 2;
                max_x = Math.max(v.x + w, max_x);
                min_x = Math.min(v.x - w, min_x);
                max_y = Math.max(v.y + h, max_y);
                min_y = Math.min(v.y - h, min_y);
            });
            graph.width = max_x - min_x;
            graph.height = max_y - min_y;
        }
    }
    function put_nodes_to_right_positions(graphs) {
        graphs.forEach(function (g) {
            var center = { x: 0, y: 0 };
            g.array.forEach(function (node) {
                center.x += node.x;
                center.y += node.y;
            });
            center.x /= g.array.length;
            center.y /= g.array.length;
            var corner = { x: center.x - g.width / 2, y: center.y - g.height / 2 };
            var offset = { x: g.x - corner.x + svg_width / 2 - real_width / 2, y: g.y - corner.y + svg_height / 2 - real_height / 2 };
            g.array.forEach(function (node) {
                node.x += offset.x;
                node.y += offset.y;
            });
        });
    }
    function apply(data, desired_ratio) {
        var curr_best_f = Number.POSITIVE_INFINITY;
        var curr_best = 0;
        data.sort(function (a, b) { return b.height - a.height; });
        min_width = data.reduce(function (a, b) {
            return a.width < b.width ? a.width : b.width;
        });
        var left = x1 = min_width;
        var right = x2 = get_entire_width(data);
        var iterationCounter = 0;
        var f_x1 = Number.MAX_VALUE;
        var f_x2 = Number.MAX_VALUE;
        var flag = -1;
        var dx = Number.MAX_VALUE;
        var df = Number.MAX_VALUE;
        while ((dx > min_width) || df > packingOptions.FLOAT_EPSILON) {
            if (flag != 1) {
                var x1 = right - (right - left) / packingOptions.GOLDEN_SECTION;
                var f_x1 = step(data, x1);
            }
            if (flag != 0) {
                var x2 = left + (right - left) / packingOptions.GOLDEN_SECTION;
                var f_x2 = step(data, x2);
            }
            dx = Math.abs(x1 - x2);
            df = Math.abs(f_x1 - f_x2);
            if (f_x1 < curr_best_f) {
                curr_best_f = f_x1;
                curr_best = x1;
            }
            if (f_x2 < curr_best_f) {
                curr_best_f = f_x2;
                curr_best = x2;
            }
            if (f_x1 > f_x2) {
                left = x1;
                x1 = x2;
                f_x1 = f_x2;
                flag = 1;
            }
            else {
                right = x2;
                x2 = x1;
                f_x2 = f_x1;
                flag = 0;
            }
            if (iterationCounter++ > 100) {
                break;
            }
        }
        step(data, curr_best);
    }
    function step(data, max_width) {
        line = [];
        real_width = 0;
        real_height = 0;
        global_bottom = init_y;
        for (var i = 0; i < data.length; i++) {
            var o = data[i];
            put_rect(o, max_width);
        }
        return Math.abs(get_real_ratio() - desired_ratio);
    }
    function put_rect(rect, max_width) {
        var parent = undefined;
        for (var i = 0; i < line.length; i++) {
            if ((line[i].space_left >= rect.height) && (line[i].x + line[i].width + rect.width + packingOptions.PADDING - max_width) <= packingOptions.FLOAT_EPSILON) {
                parent = line[i];
                break;
            }
        }
        line.push(rect);
        if (parent !== undefined) {
            rect.x = parent.x + parent.width + packingOptions.PADDING;
            rect.y = parent.bottom;
            rect.space_left = rect.height;
            rect.bottom = rect.y;
            parent.space_left -= rect.height + packingOptions.PADDING;
            parent.bottom += rect.height + packingOptions.PADDING;
        }
        else {
            rect.y = global_bottom;
            global_bottom += rect.height + packingOptions.PADDING;
            rect.x = init_x;
            rect.bottom = rect.y;
            rect.space_left = rect.height;
        }
        if (rect.y + rect.height - real_height > -packingOptions.FLOAT_EPSILON)
            real_height = rect.y + rect.height - init_y;
        if (rect.x + rect.width - real_width > -packingOptions.FLOAT_EPSILON)
            real_width = rect.x + rect.width - init_x;
    }
    ;
    function get_entire_width(data) {
        var width = 0;
        data.forEach(function (d) { return width += d.width + packingOptions.PADDING; });
        return width;
    }
    function get_real_ratio() {
        return (real_width / real_height);
    }
}
exports.applyPacking = applyPacking;
function separateGraphs(nodes, links) {
    var marks = {};
    var ways = {};
    var graphs = [];
    var clusters = 0;
    for (var i = 0; i < links.length; i++) {
        var link = links[i];
        var n1 = link.source;
        var n2 = link.target;
        if (ways[n1.index])
            ways[n1.index].push(n2);
        else
            ways[n1.index] = [n2];
        if (ways[n2.index])
            ways[n2.index].push(n1);
        else
            ways[n2.index] = [n1];
    }
    for (var i = 0; i < nodes.length; i++) {
        var node = nodes[i];
        if (marks[node.index])
            continue;
        explore_node(node, true);
    }
    function explore_node(n, is_new) {
        if (marks[n.index] !== undefined)
            return;
        if (is_new) {
            clusters++;
            graphs.push({ array: [] });
        }
        marks[n.index] = clusters;
        graphs[clusters - 1].array.push(n);
        var adjacent = ways[n.index];
        if (!adjacent)
            return;
        for (var j = 0; j < adjacent.length; j++) {
            explore_node(adjacent[j], false);
        }
    }
    return graphs;
}
exports.separateGraphs = separateGraphs;
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